Dean Finds a Hidden Love for Amelia Earhart

Dean finally admits his feelings, with some prompting from Sam, and Cas and Dean find each other to be welcome company. But it's the Winchesters, isn't it? So nothing can be sunshine and rainbows forever. When something threatens Cas, Dean finds his newfound emotions making it hard to work this case. Will Dean be allowed to actually have that coveted happy ending? Or will loving an angel prove just too much for fate to handle?
Destiel fanfic, circa late Season 8 (After Castiel takes the Angel tablet away from Dean) NO MAJOR SPOILERS, assumed knowledge of up to halfway through S08.
Slightly smutty, mostly fluff, non canon, non AU, alternate storyline